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| How does a gas spring operate? |
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A gas spring, which also may be known as a gas strut, hydraulic damper, or lifting support, is a specialized type of spring that utilizes gas under compression to exert force. A gas spring consists of a cylinder with a tight-fitting piston that slides back and forth inside a polished bore. The piston is used to compresses a gas present in the cylinder. Below the piston, a small amount of lubricating oil is used to lubricate the rod seal, and offer a small damping effect at the end of the piston rod extension.
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Working of the gas springs is often compared with the working of mechanical coil springs. Mechanical coil springs store energy by straining the material comprising the spring, while the gas springs store energy by compressing the gas within the gas spring. When pressure is exerted on the piston, it compresses the gas, simulating a compressed mechanical spring. Consequently, when the pressure acting on the piston is released, the compressed gas returns the piston to its original position, similar to that of a released spring. Gas springs can also be considered as a mechanical battery that stores and releases energy by compressing and releasing a gas for a specific purpose.
Gas springs provide direct support for lifting, positioning, lowering, and counter balancing weights. The most common use of a gas spring is as a support on a horizontally hinged door. Though the springs are widely used in various applications, the weight range supported by the springs may be few kilos or up to half a ton. |
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| Baby chair |
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| Medical bed |
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| Running machine |
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| Damper |
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All dampers developed by RenLong are designed for product applications in such a way that movement or vibration problems are resolved. Our many years of experience in damping techniques allow us to meet your individual requirement. The method of operation of the individual dampers is adapted for the highest level of comfort and safety in the application. With our extensive range we have the solutions for every application for optimum damping.
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| Brackets and End Fittings |
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RenLong offers a full range of brackets and end fittings for every size gas spring and damper. Including mounting brackets, ball studs, hinges and whatever a connecting configuration requires. Brackets are made from the highest quality stainless steel, zinc plated steel and powder coated steel. |
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| Basic Recommendations |
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| DO'S |
• Use standard gas springs rod down.
• If springs are to be stored prior to use, the
spring should be stored rod down to lubricate
the seal.
• Try to use ball joints to help avoid side load
forces. If eye (clevises) are used ensure a
sloppy fit to allow lateral movement.
• Ensure that the end fittings are in line so that
side load forces are not applied as a result
of misalignment.
• Try to use shorter springs close to the hinge
rather than long stroke springs away from the
hinge.
• Provide physical stops to limit the spring’s
extremes. i.e. ensure that undue force is not
applied to over compress or over extend the
spring.
• Ensure the gas spring’s end fittings are fully
screwed home.
• Where ball joints are used ensure the ball stud
is flush with the surface and tightened. |
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| DON'TS |
• Do not scratch, dent, chip, bend or paint the
rod.
• Do not puncture or incinerate.
• Do not lubricate the gas spring.
• Do not cycle more than 15 times per minute.
• Under no circumstances attempt to re-gas
a spring. This is an extremely hazardous
operation.
• Do not allow external objects to exert side load
forces on the gas spring or on the end fittings. |
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